University of Arizona, 1983-89.
Ph. D. *, Ecology and Evolutionary Biology, 1989. Major professor: W. M. Schaffer. Dissertation title: Adaptation, history, and development in the evolution of a desert annual life history.

San Diego State University. Research Assistant Professor, 1997-9; Lecturer and Research Associate, 1994-96. Courses taught: Conservation of wildlife, Ecology and human impacts on the environment, Genetics and evolution, Plant ecology.

Predoctoral research positions

Johns Hopkins University School of Hygiene and Public Health. Research assistant. Department of Population Dynamics, 1980-83. Public health applications of reproductive medicine. Department of Pathobiology, 1981-83. Population biology of tiger salamanders (with C. J. Stine).

American Association for the Advancement of Science; American Society of Naturalists; Botanical Society of America; Ecological Society of America; European Society for Evolutionary Biology; Evolutionary Demography Society; Sigma Xi; Society for Conservation Biology; Society for the Study of Evolution

2012: University of Florida; 2008: University of Montana; 2003: Archbold Biological Station; Joseph W. Jones Ecological Research Center; 2002: Florida State University; 2001: University of Florida; Florida International University; 1999: San Francisco State University; 1998: University of New Mexico, UC Irvine; 1997: San Francisco State University, SUNY Stony Brook; 1995: Arizona State University; 1994: University of Sydney; 1993: Emory University, University of Oregon, University of Pittsburgh; 1992: Australian National University, University of New Orleans, University of Houston, University of Montana, Clemson University, Utah State University; 1991: UC San Diego; 1990: University of Chicago, University of Wisconsin – Milwaukee, California State University, San Bernardino; 1989: Imperial College at Silwood Park, UK, University of Nevada, Las Vegas; 1987: UC Davis.

Invited panels and working groups

National Evolutionary Synthesis Center (NESCent), group on “Toward a general theory of biological invasions,” 2009.

National Center for Ecological Analysis and Synthesis (NCEAS), working group on “A new synthesis of demography and dispersal,” 2001-2002.